《BS-EN-ISO-4590-2003.pdf》由会员分享，可在线阅读，更多相关《BS-EN-ISO-4590-2003.pdf（28页珍藏版）》请在三一文库上搜索。
1、BRITISH STANDARD BS EN ISO 4590:2003 Rigid cellular plastics Determination of the volume percentage of open cells and of closed cells The European Standard EN ISO 4590:2003 has the status of a British Standard ICS 83.100 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 200
2、6, Uncontrolled Copy, (c) BSI BS EN ISO 4590:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 16 May 2003 BSI 16 May 2003 ISBN 0 580 41865 0 National foreword This British Standard is the official English language version of EN ISO 4590:2
3、003. It is identical with ISO 4590:2003. It supersedes BS EN ISO 4590:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/24, Flexible cellular materials test methods, which has the responsibility to: A list of organizations represented on this c
4、ommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using th
5、e “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from l
6、egal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.
7、 Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 17, the Annex ZA page, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates wh
8、en the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 4590 May 2003 ICS 83.100Supersedes EN ISO 459
9、0:1995 English version Rigid cellular plastics - Determination of the volume percentage of open cells and of closed cells (ISO 4590:2002) Plastiques alvolaires rigides - Dtermination du pourcentage volumique de cellules ouvertes et de cellules fermes (ISO 4590:2002) Harte Schaumstoffe - Bestimmung d
10、es Volumenanteils offener und geschlossener Zellen (ISO 4590:2002) This European Standard was approved by CEN on 11 March 2003. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard
11、 without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other languag
12、e made by translation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hunga
13、ry, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CEN
14、All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4590:2003 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I NESO 54:0902( 30E) 2 Foreword The text of ISO 4590:2002 has be
15、en prepared by Technical Committee ISO/TC 61 “Plastics“ of the International Organization for Standardization (ISO) has been taken over as EN ISO 4590:2003 by Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. This European Standard shall be given the status of a nat
16、ional standard, either by publication of an identical text or by endorsement, at the latest by November 2003, and conflicting national standards shall be withdrawn at the latest by November 2003. This document supersedes EN ISO 4590:1995. According to the CEN/CENELEC Internal Regulations, the nation
17、al standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland a
18、nd the United Kingdom. Endorsement notice The text of ISO 4590:2002 has been approved by CEN as EN ISO 4590:2003 without any modifications. NOTE Normative references to International Standards are listed in annex ZA (normative). EN ISO 4590:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20
19、 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 4590:2002(E) INTERNATIONAL STANDARD ISO 4590 Second edition 2002-03-01 Rigid cellular plastics Determination of the volume percentage of open cells and of closed cells Plastiques alvolaires rigides Dtermination du pourcentage
20、volumique de cellules ouvertes et de cellules fermes EN ISO 4590:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii EN ISO 4590:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c)
21、BSI iii Contents Page Foreword.iv 1 Scope1 2 Normative reference1 3 Terms and definitions .1 4 Principle2 5 Test specimens3 6 Conditioning and test atmospheres3 7 Measurement of surface area S and geometrical volume Vg.3 8 Determination of impenetrable volume Vi by method 1: Pressure variation (pykn
22、ometer).5 9 Determination of impenetrable volume Vi by method 2: Volume expansion 9 10 Correction for specimen surface cells opened during specimen preparation .13 11 Expression of results14 12 Precision and accuracy.14 13 Test report15 Annex A (normative) Notes on procedure16 EN ISO 4590:2003 Licen
23、sed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is norm
24、ally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in t
25、he work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare
26、 International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some
27、 of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 4590 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 10, Cellular plastics. This second edition cancels a
28、nd replaces the first edition (ISO 4590:1981), which has been technically revised. Annex A forms a normative part of this International Standard. EN ISO 4590:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRATIONAL TSANDADR IS:0954
29、 O2002(E) ISO 2002 All rights reserved 1 Rigid cellular plastics Determination of the volume percentage of open cells and of closed cells 1 Scope This International Standard specifies a general procedure for the determination of the volume percentage of open and of closed cells of rigid cellular pla
30、stics, by measurement first of the geometrical volume and then of the air- impenetrable volume of test specimens. The procedure includes the correction of the apparent open-cell volume by taking into account the surface cells opened by cutting during specimen preparation. Two alternative methods (me
31、thod 1 and method 2), and corresponding apparatus, are specified for the measurement of the impenetrable volume. The results obtained from method 2 (see clause 9) are intended to be used for comparison purposes only. 2 Normative reference The following normative document contains provisions which, t
32、hrough reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibil
33、ity of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 1923:1981, Cellular plastics and rubb
34、ers Determination of linear dimensions 3 Terms and definitions For the purposes of this International Standard, the following terms and definitions apply. 3.1 surface area S the total surface area of the test specimen determined by measuring its geometrical dimensions 3.2 geometrical volume Vg the v
35、olume of the test specimen determined by measuring its geometrical dimensions 3.3 surface/volume ratio r the ratio g S V for the test specimen EN ISO 4590:2003 2 EN ISO 4590:2003 1 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4590:200
36、2(E) 2 ISO 2002 All rights reserved 3.4 impenetrable volume Vi the volume of the test specimen into which air cannot penetrate and from which gas cannot escape, under the test conditions 3.5 apparent volume percentage of open cells r the ratio gi g 100 VV V NOTE It includes the volume of the cells o
37、pened during cutting of the test specimen, and depends on the nature of the cellular plastic under test and on the surface/volume ratio r of the test specimen. 3.6 corrected volume percentage of open cells 0 the apparent volume percentage of cells r, corrected to take into account the surface cells
38、opened by cutting during preparation of the test specimen NOTE It is the limit of the apparent volume percentage of open cells r, as the surface/volume ratio r approaches zero. 3.7 corrected volume percentage of closed cells 0 the volume percentage remaining after accounting for the corrected volume
39、 percentage of open cells 00 100= NOTE This percentage includes the volume of the cell walls. 4 Principle The surface area S and geometrical volume Vg of a number of test specimens, each having a different geometrical surface/volume ratio r, is determined. The impenetrable volume Vi is determined by
40、 either of two methods, namely: a) method 1 by pressure variation (pyknometer); b) method 2 by volume expansion. The determination of the impenetrable volume Vi is based on the application of the Boyle-Mariotte law to a gas confined in an indeformable chamber, first in the absence and then in the pr
41、esence of a test specimen. The apparent volume percentage of open cells r of the test specimen is calculated by plotting the curve r = f(r) and extrapolating to r = 0, followed by calculation of the corrected volume percentage of open cells 0 and the corrected volume percentage of closed cells 0. EN
42、 ISO 4590:2003 3 EN ISO 4590:2003 2 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ISO 4590:2002(E) ISO 2002 All rights reserved 3 5 Test specimens 5.1 Number A minimum of three test specimens shall be prepared for each test. A total of thr
43、ee tests shall be carried out per sample. 5.2 Preparation Cut test specimens out with a band saw and machine them if necessary, taking care that there is no deformation to the original cell structure other than at the surface. The specimens shall be free of dust, voids and moulding skins. Hot-wire c
44、utting shall not be used. 5.3 Dimensions The required test specimen dimensions depend on the specific method used to measure the impenetrable volume Vi. Initial specimen sizes shall be as follows: Method 1: Pressure variation (pyknometer) length: (25 1) mm width: (25 1) mm thickness: (25 1) mm Metho
45、d 2: Volume expansion length: (100 1) mm width: (30 1) mm thickness: (30 1) mm 5.4 Sectioning of test specimens Both methods require that specimens r2 and r3 of each set be further sectioned as shown in Figure 1 to provide a range of surface/volume ratios for testing. 6 Conditioning and test atmosph
46、eres The test specimens shall be conditioned for not less than 16 h at (23 2) C and (50 5) % relative humidity prior to testing. It is important that the test be conducted at (23 2) C and preferably at controlled and moderate humidity, i.e. (50 5) %. 7 Measurement of surface area S and geometrical v
47、olume Vg 7.1 Determine the linear dimensions of each test specimen in accordance with ISO 1923, except that measurements shall be made to the nearest 0,05 mm. The locations of the measurement points shall be as shown in Figure 2. 7.2 Calculate the average linear dimensions, the surface area S and th
48、e geometrical volume Vg, retaining all significant figures for test specimens r1 (one parallelepiped), r2 (two parallelepipeds) and r3 (four parallelepipeds). EN ISO 4590:2003 4 EN ISO 4590:2003 3 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2006, Uncontrolled Copy, (c)
49、BSI ISO 4590:2002(E) 4 ISO 2002 All rights reserved Round off the final values for surface area S to the nearest 0,01 cm2 and for the geometrical volume Vg to the nearest 0,01 cm3. Figure 1 Pattern for cutting test specimens a) Thick specimen b) Thin specimen Figure 2 Locations of measurement points EN ISO 4590:2003 5 EN ISO 4590:2003 4 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:12:02 GMT+00:00 2